I think that the total Android revenue was greater than the total Windows Phone revenue quite a while ago. I don't know if it still holds true now that WinPho sales are more than a whisker over none.

Can you cite any sources for this?

Here are a couple (I only took a quick glance), as many articles pop up with a search:

http://www.itworld.com/open-source/372628/microsoft-makes-bi...

http://allthingsd.com/20130718/microsofts-making-more-money-...